Improvement in ore-crushers



I. M PHELPS. lOre Crusher. No 200,336. 'Patented Feb. 12,A 1.878.

'UNITED STATES PATENTOFFICE vIRA M. rHEL'Ps, or PHILADELPHIA, rNNsYLvANIA, AssIeNoR or A PART OF HIS RIGHT TO THEODORE L. CHASE' AND H. J. FILLMAN, SAME PLAGE, AND D. K. ALLEN, OF4 BOSTON, MASSACHUSETTS.

IMPROVEMENT |N qoRE-cRusHERsQ Specification forming part of Letters Patent N0. 200,336, dated February 12, 1878; application filed october 24, 1877.

To all whom t may concern Beit known that I, IRA M. PHELPS, of Philadelphia, Pennsylvania, have invented a new and useful Improvement in Stone or Ore Breakers, of which the following is a specification My invention relates to an improvement in the stone or ore breaking machine described in the patent of Gr. A. Rollins, No. 29,197, July 17, 1860 5 the object of my improvement being to so construct the machine that while the greatest crushing power` takes place at the point where it is most needed, the driving appliances shall be beneath the base of the may chine, where they cannot interfere with the duties ot' the attendants.

In the accompanying drawing, Figure l is a vertical section of my improved stone-breakin g machine, Fig. 2, a sectional plan on the line 1 2, Fig. 1 5 Fig. 3, an edge view of the breaking-lever and section of the frame; Fig. 4, a vertical section of the breaking lever, and Fig. 5 a vertical section of the frame without the lever.

The machine consists of twomain partsnamely, the Xcd frame A and the -breakinglever B. Viewed as shown in the sectional plan, Fig. 2, the frame is quadrangular in shape, having opposite parallel sides a a and opposite ends I) b', the upper portions of the latter being inclined outward Vand. upward, as shown in Fig. 5. The opposite sides a a are carried upward, so asto form bearings d dfor the pivots e e of the lever B, and the frame is provided at its lower end with suitable iianges ff, for attachment to an appropriate foundation.

To the inner side of each of the inclined ends b b of the frame A is tted a plate, 11preferably of wrought-iron, the lower edge of which rests on a ledge, t, in the said frame, the plate being confined by two taper keys, k k, one edge of each key bearing' against a shoulder, m,

formed in the frame,[and the other edge against the plate, as best observed in Fig. 2. These vtaper keys can be removed by driving them upward from below, when the plate h will be at liberty to be withdrawn to make way for a new one when a change is necessary.

The upper portion of thebreaking-leverB has opposite edges, n n', inclined downward and outward, and against each of these inclined edges is tted a wrought-iron plate, p, the lower edge of which restson lugs q q, the

two plates being held in place at their upper the lever consists of two parts, connected toy gether near their ends by a journal, w, for the end of a rod, through the medium of which a vibrating motion may be imparted to the lever.

The opposite edges of the plates p p are flush 4with the opposite sides of that part or the lever B to which they are attached, and the faces of the keys la are flush with the inner faces of the side pieces c a of the frame,

-between which the upper portion of the lever ts snugly, so that no particles of mineral can pass between the lever and frame. The fitting of the lever in the frame, however, is not too tight to prevent the free movement of the former.

When the lever is in the vertical position shown in Fig. 1, there are two precisely similar chambers, M M, for receiving the stones to be broken, each chamber being bounded in two directions by the opposite keys 7c k, and in the other directions by al1-inclined wrought-iron plate, h, of the frame, and a similar inclined wrought-iron plate, p, of the lever. These plates may be more or less roughened, as the character of the mineral on which they have to operate may suggest, and in place of wroughtiron, the plates may be of othermetal, wroughtiron being, however, preferred.

When the desired limited vibrating motion is imparted to the lever B, the mineral placed in the two chambers M M must necessarily be broken, the pieces falling from the chambers into any suitable receptacle. The keys ki'orm false side plates for the chambers M,and serve to protect the sides of the frame A.

The most important feature of my invention is the extension of the lever B down beneath the frame A, for by this arrangement such a long lever is obtained that the driving appliances may be comparatively light and simple, and may be placed below the floor or platform on which the machine stands, so that they are out of the way, the ioor being entirely clear, and presenting an unobstructed surface for the convenience of attendants in piling up the quartz, and in feeding the same to both compartments of the machine. At the same time the arrangement of the pivot abovel the jaws insures the exertion, through the medium of the lever, of the greatest force Where it is most needed.

By properly constructing the frame A the chamber M on one side of the lever B may be made larger than that on the other, so that IRA M. PHELPS.

Witnesses:

RICHARD L. GARDINER, HARRY SMrrH. 

